Finding the Fourth Proportional to 17,857.59, 24,642.93 and 9,899.34

Step by Step Solution

1. Step 1: Write the proportion equation
   17,857.59 : 24,642.93 = 9,899.34 : x
2. Step 2: Convert to fraction form
   17,857.59/24,642.93 = 9,899.34/x
3. Step 3: Cross multiply
   17,857.59x = 24,642.93 × 9,899.34
4. Step 4: Simplify right side
   17,857.59x = 243,948,742.67
5. Step 5: Solve for x
   x = 243,948,742.67/17,857.59
6. Step 6: Final answer
   x = 13,660.79